2005ApJ...623..897L

Query : 2005ApJ...623..897L

2005ApJ...623..897L - Astrophys. J., 623, 897-910 (2005/April-3)

Reddening and the extinction law at high galactic latitude.

LARSON K.A. and WHITTET D.C.B.

Abstract (from CDS):

We present near-infrared (JHKL) photometry of 103 southern stars located behind translucent interstellar clouds at high Galactic latitude. Our data are combined with visual photometry and spectral type information from the literature in a detailed analysis of the wavelength dependence of interstellar extinction by dust in these high-latitude clouds. We investigate the shape of the near-infrared extinction curve and evaluate the total line-of-sight extinction (AV) and ratio of total-to-selective extinction (RV) in each line of sight. Sources of uncertainty in RVarising from photometric errors and spectral classification errors are carefully assessed and quantified as functions of the line-of-sight reddening. We detect appreciable differences in our results compared with the average extinction curve for dust in the diffuse interstellar medium (ISM) close to the Galactic plane. Assuming a power-law form in the near-infrared, we find the mean for high-latitude clouds to be well described by <Aλ>∝λ–2.3, somewhat steeper than that for the diffuse ISM (<Aλ>∝λ–1.8). Our sample includes a substantial number of lines of sight with low RVvalues (47% with RV<2.8) relative to the diffuse ISM average of 3.05±0.15. We conclude that many high-latitude clouds have enhanced abundances of relatively small grains.

Abstract Copyright: ∼

Journal keyword(s): ISM: Dust, Extinction - Infrared: ISM - ISM: Clouds

VizieR on-line data: <Available at CDS (J/ApJ/623/897): table1.dat refs.dat table2.dat>

Simbad objects: 105

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Number of rows : 105
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 5931 * 01 00 49.6553905248 -01 01 18.918261984   10.11 8.75     K3III 13 0
2 HD 6667 * 01 07 24.8076119448 -01 29 57.545450880   9.75 9.45     A8/9V 13 0
3 HD 7133 dS* 01 11 34.9882597152 -05 20 24.781554132   9.31 8.81     kA6hF3mF5(III)SiEuSrBa 27 0
4 HD 7162 * 01 11 51.1141306728 -00 26 42.964687500   9.27 8.39     G5/6IV 15 0
5 HD 8153 * 01 20 53.0878518672 -01 18 38.128289112   7.61 7.32     A1mA6-A9 19 0
6 HD 18873 * 03 02 00.6145205232 -02 56 24.943229412   9.32 8.88     F0/2IV/V 20 0
7 * rho03 Eri PM* 03 04 16.5168842952 -07 36 03.078421848   5.46 5.30     A5V 76 0
8 BD-06 602 * 03 05 17.5856237640 -06 22 01.640519040   9.59 9.38     A0 7 0
9 HD 19462 * 03 07 56.2871548848 +07 15 22.211669520   8.31 8.06     A0 15 0
10 HD 20319 ** 03 16 00.85447 -05 55 07.3324   6.15 6.17     B9III 71 0
11 BD+06 506 * 03 16 07.6449003960 +07 04 54.681623724   9.81 9.38     kA7hF0mF0 18 0
12 HD 21613 * 03 29 32.9648616312 +06 29 12.629046768   9.43 9.09     A5 8 0
13 HD 21777 * 03 30 44.7383373048 +05 30 47.080533924   7.86 7.68     A2 14 0
14 HD 23095 * 03 41 54.3139121496 -14 21 47.505655764   7.13 7.04     A1IV/V 16 0
15 * u Tau SB* 03 45 40.4433670200 +06 02 59.985349222   5.225 5.337     B3V 139 0
16 HD 24003 * 03 49 30.5619151512 -00 21 21.108759156   8.63 8.55     A0V 19 0
17 HD 24264 * 03 51 50.5622142120 +02 07 54.607205100   10.07 9.70     A7III 10 0
18 * 31 Tau ** 03 52 00.2291740237 +06 32 05.659794373 5.3         B3.5V+ 111 0
19 HD 24400 PM* 03 53 13.1985966528 +07 46 13.814398380   7.96 7.46     F5 34 1
20 HD 24520 * 03 54 06.9585920112 +02 11 01.637595960   8.71 8.62     A0/1V 19 0
21 HD 25450 * 03 55 59.4104937576 -73 33 19.900071504   9.998 9.420     F0IV 18 0
22 HD 24749 * 03 56 08.3916647220 +00 42 39.951198804   9.935 9.468 9.569   F0V 25 0
23 HD 24763 * 03 56 18.7593096960 +02 12 27.202227660   9.30 8.25     G8III 16 0
24 HD 24819 ** 03 56 43.0313153760 -01 34 18.718824072   8.35 8.04     A5/7III 23 0
25 BD+04 611 * 03 57 24.3720632304 +04 53 21.087203532   10.20 9.72     A5 6 0
26 HD 25863 * 03 58 35.4680110704 -74 44 47.690130012   10.24 9.95     A2/3V 17 0
27 HD 25093 * 03 59 13.4866339488 +00 57 29.076479352   9.70 9.26     A7II/III 13 0
28 BD+03 547 * 03 59 38.2678947096 +03 26 42.758314908   10.35 9.78     F5 6 0
29 HD 25137 * 03 59 41.5758259776 +01 47 41.331078744   7.36 7.26     A0V 20 0
30 HD 25154 * 03 59 48.0904363032 -00 01 12.591409584   10.42 9.88     kA6hF1mF5(II) 29 0
31 HD 25339 * 04 01 34.5306054816 -00 59 37.363718904   9.94 9.56     A9V 23 0
32 HD 25400 PM* 04 02 13.1973460344 +00 04 50.496705408   8.70 8.34     A5IV 31 0
33 HD 25413 PM* 04 02 19.2900411192 +00 04 02.898368688   9.72 9.24     A4II/III 14 0
34 HD 25520 * 04 03 21.2223733680 +03 11 16.171731168   8.74 7.07     K3(III) 14 0
35 HD 26434 * 04 04 46.5996295296 -71 52 49.624965588   10.26 10.01     A1V 18 0
36 HD 25881 * 04 06 03.3308180712 +00 48 46.784231568   9.60 9.25     A0III 15 0
37 HD 25896 * 04 06 09.0957640968 -00 01 15.756613320   9.34 8.38     G8IV 16 0
38 HD 26173 SB* 04 08 47.1213458568 +06 46 53.531071824   9.31 8.99     A0 12 0
39 BD+04 643 * 04 09 26.3828000952 +04 45 39.704889312   10.41 9.85     A2 6 0
40 HD 26323 Em* 04 10 06.8498684726 +07 41 52.441120214   8.98 8.62     B9 22 0
41 BD+05 603 * 04 12 07.7029409856 +06 09 33.136173324   10.32 9.78     A2 6 0
42 HD 26607 PM* 04 12 36.7082068872 +02 03 08.820649836   9.91 8.73     K1/2III 7 0
43 V* V1138 Tau LP* 04 13 24.4119808536 +03 54 08.053592976   9.90 8.16     M2III 15 0
44 HD 26738 Pu* 04 13 53.3878900488 +03 05 52.036020708   9.93 9.59     A7/9V 6 0
45 HD 27063 PM* 04 16 30.2412812112 -00 34 22.092673404   8.71 8.07     G3V 97 0
46 HD 27146 * 04 17 17.3910202224 +02 31 46.875452196   8.26 7.22     K0III 15 0
47 HD 28856 * 04 32 17.7545423832 -13 35 11.480811504   9.46 9.27     A1V 23 0
48 BD-15 822 * 04 37 02.3556728736 -15 00 56.076626952   11.15 10.39     F8 5 0
49 HD 31900 * 04 59 04.3066091400 -11 23 54.242202228   9.54 9.34     A2/3V 12 0
50 HD 34639 * 05 18 46.0351331784 -09 02 42.303647364   9.59 9.61     B9III/IV 12 0
51 CD-27 2312 * 05 30 49.5599875416 -27 07 53.995906128   10.10 9.93     ~ 9 0
52 HD 57336 * 07 09 30.5119377408 -79 25 55.109368164   7.97 7.81     A0IV 44 0
53 HD 55718 ** 07 12 25.82296 -36 32 39.7835           B2.5V+B9V 55 0
54 HD 56073 * 07 13 03.6564714624 -48 47 09.949728876   8.50 8.38     A1V 10 0
55 HD 59421 * 07 27 35.1045301992 -47 05 45.189988512   8.81 8.62     B8/9IV/V 21 0
56 HD 64033 PM* 07 45 00.2249805888 -73 50 30.900610824   9.37 8.98     F2V 18 0
57 HD 80531 * 09 13 22.8634783152 -78 13 42.251896416   8.76 8.53     A3V 12 0
58 HD 80840 * 09 15 13.0767852576 -78 07 02.417921724   10.43 10.06     A0V(n) 12 0
59 HD 85304 * 09 50 57.5096795112 +00 48 23.142283092   9.30 9.11     A3V 23 0
60 HD 94413 * 10 51 25.4839574640 -74 36 00.199250028   10.20 9.75     A2IV/Vs 21 0
61 HD 94434 * 10 51 37.9353005976 -74 26 42.152073972   9.49 8.97     A2V 10 0
62 HD 94473 * 10 53 58.6308027864 -26 44 45.984047388 6.93 7.43 7.50     B5III 32 0
63 V* TX Crt a2* 11 05 34.0436531568 -25 01 09.250435488   9.88 9.45     ApSrEuCr 43 0
64 CD-23 9822 * 11 14 33.8897658096 -23 55 11.736888276   11.34 11.05     ~ 7 0
65 HD 98837 * 11 21 02.5161075120 -74 27 55.729046196   8.96 8.54     A3V 9 0
66 HD 99786 * 11 27 31.6075730280 -74 13 37.423113276   9.21 9.07     B9IV/V 17 0
67 HD 100359 gD* 11 31 47.8656215280 -73 54 09.592292448   7.081 6.884     B7IV 34 0
68 HD 106631 * 12 15 57.8408533896 -43 33 42.242128740   9.67 9.27     A1mA5-F0 19 0
69 HD 125679 * 14 21 29.8767714000 -19 40 48.550018008   8.90 8.76     A1/2V 16 0
70 HD 139515 * 15 38 45.8588628888 -06 19 02.718795396   8.82 8.37     F0V 23 0
71 HD 140536 * 15 43 58.9079085408 +07 36 19.344361428   8.42 8.32     A0 20 0
72 HD 141423 ** 15 49 12.016 -03 14 02.44   8.4 8.3     G3V 11 0
73 HD 141569 Or* 15 49 57.7482550392 -03 55 16.341617064 7.22 7.20 7.12 7.00 7.04 A2VekB9mB9(_lB) 578 0
74 HD 141657 * 15 50 23.6063675055 -03 03 19.142467613   9.17 8.59     F3V 20 0
75 HD 142554 a2* 15 55 22.3416848760 -04 28 34.636200564   9.973 9.766 9.73 9.433 ApSiCr 29 0
76 HD 142863 * 15 57 02.9108666616 -02 59 19.257344916   9.37 8.98     A4IV/V 23 0
77 HD 142930 * 15 57 14.9199252984 +03 24 19.237484988   7.47 7.28     A0V 33 0
78 HD 143294 * 15 59 28.9546317408 +03 45 48.509100144   9.80 9.45     A5/7II 10 0
79 HD 145631 * 16 12 44.1005428344 -19 30 10.348834320   7.73 7.60     B9Vann 107 0
80 HD 146931 * 16 19 06.0802444512 -07 19 09.741641304   8.10 7.82     A0/1V 22 0
81 V* V933 Sco a2* 16 20 05.4927999744 -20 03 23.030685720   7.56 7.40     B8:VpSrTiSiEu 204 0
82 HD 153212 * 16 58 02.0446996368 -01 08 37.416666624   9.68 9.13     A3/5II 23 0
83 HD 153605 * 17 00 32.7418912752 -00 46 12.361844244   8.92 8.55     A3V 11 0
84 HD 156225 EB* 17 15 59.1733160136 +10 53 34.342938924   9.23 8.90     A2 9 0
85 HD 156597 * 17 18 39.2641217136 -04 16 48.547564428   10.55 9.92     A2III/IV 9 0
86 HD 156822 * 17 19 17.1664701024 +11 10 20.545393764   7.75 7.70     A0 15 0
87 HD 156912 * 17 19 39.9059796024 +12 30 03.868821720   9.77 9.52     A 8 0
88 HD 157280 * 17 22 26.0440151712 -04 44 19.706544132   9.74 9.06     A3II/III 10 0
89 HD 157333 ** 17 22 45.1752722904 -03 43 53.561206416   9.32 8.63     A0V 18 0
90 HD 157512 ** 17 33 59.7749 -78 08 08.192   8.67 8.44     A4V 6 0
91 HD 187558 SB* 19 51 07.8466980360 -14 36 10.469604060   10.43 9.12     K0/1IV 6 0
92 HD 187869 * 19 52 44.0417459928 -15 24 56.976968844   8.98 8.94     B9IV/V 10 0
93 HD 188220 * 19 54 40.9538844312 -15 54 49.067422200   8.32 8.02     A0V 28 0
94 * 58 Aql * 19 54 44.7948526968 +00 16 25.050363384   5.703 5.631     B9IV 228 0
95 HD 189115 * 19 58 53.4999536088 -13 47 21.275223072   11.09 9.50     K1/2(III) 5 0
96 HD 192435 * 20 16 02.2762113984 -33 15 22.964146740   9.77 9.14     F2V 20 0
97 HD 198772 * 20 52 47.3374061760 -07 01 39.827856972   9.70 9.59     A1V 10 0
98 HD 199469 * 20 57 40.1645677752 -07 42 48.488577948   7.51 7.50     B9.5V 16 0
99 HD 201379 * 21 09 18.2459805096 -04 57 10.337294916   8.45 8.34     A1V 16 0
100 HD 203532 * 21 33 54.5744476728 -82 40 59.106857160 6.15 6.51 6.38     B3.5V 108 0
101 HD 205037 * 21 43 36.3350858184 -83 04 22.420502148   9.19 7.81     K1/2III 12 0
102 HD 207115 * 21 56 45.8116222776 -83 02 08.067198048   9.49 7.83     K3/4III 6 0
103 HD 210121 * 22 08 11.9027578440 -03 31 52.765490316   7.84 7.68     B7II 185 0
104 HD 216039 * 22 49 11.8331560344 +26 30 47.128141584   8.56 8.21     A2 16 0
105 HD 216308 * 22 51 46.1341977384 +15 05 08.981520864   7.08 7.00     A0 18 0

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